394581911012 has 6 divisors (see below), whose sum is σ = 690518344278. Its totient is φ = 197290955504.

The previous prime is 394581910969. The next prime is 394581911027. The reversal of 394581911012 is 210119185493.

It can be written as a sum of positive squares in only one way, i.e., 274854838756 + 119727072256 = 524266^2 + 346016^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49322738873 + ... + 49322738880.

It is an arithmetic number, because the mean of its divisors is an integer number (115086390713).

Almost surely, 2^394581911012 is an apocalyptic number.

It is an amenable number.

394581911012 is a deficient number, since it is larger than the sum of its proper divisors (295936433266).

394581911012 is a wasteful number, since it uses less digits than its factorization.

394581911012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98645477757 (or 98645477755 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 44.

The spelling of 394581911012 in words is "three hundred ninety-four billion, five hundred eighty-one million, nine hundred eleven thousand, twelve".